AutoCodes – Scion – B124B Scion

B124B Scion Code - Automatic High Beam System

Quick Answer

This Diagnostic Trouble Code (DTC) is stored when the Main Body ECU (Multiplex Network Body ECU) detects a malfunction in the Forward Recognition Camera. Common causes include Faulty Forward Recognition Camera, Forward Recognition Camera harness is open or shorted, Forward Recognition Camera circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B124B Scion indicates Automatic High Beam System.
Common causes: Common causes include Faulty Forward Recognition Camera, Forward Recognition Camera harness is open or shorted, Forward Recognition Camera circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 353

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B124B Scion Description

This Diagnostic Trouble Code (DTC) is stored when the Main Body ECU (Multiplex Network Body ECU) detects a malfunction in the Forward Recognition Camera.

OBDII Code B124B Scion - Automatic High Beam System - AutoCodes.com — B124B Scion Code - Automatic High Beam System

What does this mean?

What are the Possible Causes of the DTC B124B Scion?

Faulty Forward Recognition Camera
Forward Recognition Camera harness is open or shorted
Forward Recognition Camera circuit poor electrical connection
Faulty Main Body ECU (Multiplex Network Body ECU)

How to Fix the DTC B124B Scion?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B124B Scion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B124B Scion Code

1. What does OBDII code B124B for a Scion Automatic High Beam System indicate?

The B124B code specifically relates to a fault in the Automatic High Beam System of the Scion.

2. What are common symptoms of OBDII code B124B in a Scion?

Common symptoms include the automatic high beams not functioning properly or not turning on at all.

3. What are possible causes for OBDII code B124B in a Scion?

Potential causes may include a faulty automatic high beam sensor, wiring issues, or a malfunction in the control module.

4. How can I diagnose the issue related to OBDII code B124B in my Scion?

Diagnosis typically involves using a professional OBDII scanner to read the code, inspecting the automatic high beam system components, and testing the sensor's functionality.

5. Can I repair OBDII code B124B in a Scion on my own?

Depending on your level of automotive expertise, you may be able to repair the issue yourself by replacing a faulty sensor or addressing wiring problems. Otherwise, it's recommended to seek assistance from a qualified mechanic.

6. Is it safe to continue driving with OBDII code B124B present in my Scion?

While the issue may not directly affect the drivability of the vehicle, it's best to address it promptly to ensure the proper functioning of the Automatic High Beam System.

7. How much does it typically cost to repair OBDII code B124B in a Scion?

Repair costs can vary depending on the specific cause of the issue, but it's advisable to budget for sensor replacement or potential wiring repairs.

8. Can OBDII code B124B in a Scion be a recurring problem?

If the underlying cause of the code is not properly addressed during repairs, it's possible for the issue to recur, necessitating further diagnosis and repairs.

9. Are there any preventive measures to avoid OBDII code B124B in a Scion?

Regular maintenance checks and addressing any issues with the Automatic High Beam System promptly can help prevent the occurrence of OBDII code B124B.

10. Will clearing the OBDII code B124B in my Scion reset the Automatic High Beam System?

Clearing the code may temporarily reset the system, but if the underlying issue is not fixed, the code is likely to reappear, indicating an ongoing problem with the Automatic High Beam System.